Smallpox was a major human disease until its eradication. The specific virus responsible for causing smallpox in humans is the:
Q1. Smallpox was a major human disease until its eradication. The specific virus responsible for causing smallpox in humans is the:
Answer: Variola virus
Explanation: Variola virus causes smallpox. Vaccinia virus is used for immunization and is the most tempting distractor due to its historical link.